284 lines
8.0 KiB
C
284 lines
8.0 KiB
C
/*
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* QEMU Audio subsystem header
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*
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* Copyright (c) 2003-2005 Vassili Karpov (malc)
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#ifndef QEMU_AUDIO_INT_H
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#define QEMU_AUDIO_INT_H
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#ifdef CONFIG_AUDIO_COREAUDIO
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#define FLOAT_MIXENG
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/* #define RECIPROCAL */
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#endif
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#include "mixeng.h"
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struct audio_pcm_ops;
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struct audio_callback {
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void *opaque;
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audio_callback_fn fn;
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};
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struct audio_pcm_info {
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int bits;
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bool is_signed;
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bool is_float;
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int freq;
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int nchannels;
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int bytes_per_frame;
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int bytes_per_second;
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int swap_endianness;
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};
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typedef struct AudioState AudioState;
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typedef struct SWVoiceCap SWVoiceCap;
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typedef struct STSampleBuffer {
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size_t pos, size;
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st_sample samples[];
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} STSampleBuffer;
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typedef struct HWVoiceOut {
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AudioState *s;
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int enabled;
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int poll_mode;
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int pending_disable;
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struct audio_pcm_info info;
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f_sample *clip;
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uint64_t ts_helper;
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STSampleBuffer *mix_buf;
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void *buf_emul;
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size_t pos_emul, pending_emul, size_emul;
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size_t samples;
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QLIST_HEAD (sw_out_listhead, SWVoiceOut) sw_head;
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QLIST_HEAD (sw_cap_listhead, SWVoiceCap) cap_head;
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struct audio_pcm_ops *pcm_ops;
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QLIST_ENTRY (HWVoiceOut) entries;
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} HWVoiceOut;
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typedef struct HWVoiceIn {
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AudioState *s;
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int enabled;
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int poll_mode;
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struct audio_pcm_info info;
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t_sample *conv;
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size_t total_samples_captured;
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uint64_t ts_helper;
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STSampleBuffer *conv_buf;
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void *buf_emul;
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size_t pos_emul, pending_emul, size_emul;
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size_t samples;
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QLIST_HEAD (sw_in_listhead, SWVoiceIn) sw_head;
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struct audio_pcm_ops *pcm_ops;
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QLIST_ENTRY (HWVoiceIn) entries;
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} HWVoiceIn;
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struct SWVoiceOut {
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QEMUSoundCard *card;
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AudioState *s;
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struct audio_pcm_info info;
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t_sample *conv;
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int64_t ratio;
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struct st_sample *buf;
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void *rate;
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size_t total_hw_samples_mixed;
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int active;
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int empty;
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HWVoiceOut *hw;
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char *name;
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struct mixeng_volume vol;
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struct audio_callback callback;
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QLIST_ENTRY (SWVoiceOut) entries;
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};
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struct SWVoiceIn {
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QEMUSoundCard *card;
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AudioState *s;
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int active;
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struct audio_pcm_info info;
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int64_t ratio;
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void *rate;
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size_t total_hw_samples_acquired;
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struct st_sample *buf;
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f_sample *clip;
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HWVoiceIn *hw;
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char *name;
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struct mixeng_volume vol;
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struct audio_callback callback;
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QLIST_ENTRY (SWVoiceIn) entries;
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};
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typedef struct audio_driver audio_driver;
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struct audio_driver {
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const char *name;
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const char *descr;
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void *(*init) (Audiodev *);
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void (*fini) (void *);
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struct audio_pcm_ops *pcm_ops;
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int can_be_default;
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int max_voices_out;
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int max_voices_in;
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int voice_size_out;
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int voice_size_in;
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QLIST_ENTRY(audio_driver) next;
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};
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struct audio_pcm_ops {
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int (*init_out)(HWVoiceOut *hw, audsettings *as, void *drv_opaque);
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void (*fini_out)(HWVoiceOut *hw);
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size_t (*write) (HWVoiceOut *hw, void *buf, size_t size);
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void (*run_buffer_out)(HWVoiceOut *hw);
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/*
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* get a buffer that after later can be passed to put_buffer_out; optional
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* returns the buffer, and writes it's size to size (in bytes)
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* this is unrelated to the above buffer_size_out function
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*/
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void *(*get_buffer_out)(HWVoiceOut *hw, size_t *size);
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/*
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* put back the buffer returned by get_buffer_out; optional
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* buf must be equal the pointer returned by get_buffer_out,
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* size may be smaller
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*/
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size_t (*put_buffer_out)(HWVoiceOut *hw, void *buf, size_t size);
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void (*enable_out)(HWVoiceOut *hw, bool enable);
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void (*volume_out)(HWVoiceOut *hw, Volume *vol);
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int (*init_in) (HWVoiceIn *hw, audsettings *as, void *drv_opaque);
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void (*fini_in) (HWVoiceIn *hw);
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size_t (*read) (HWVoiceIn *hw, void *buf, size_t size);
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void *(*get_buffer_in)(HWVoiceIn *hw, size_t *size);
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void (*put_buffer_in)(HWVoiceIn *hw, void *buf, size_t size);
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void (*enable_in)(HWVoiceIn *hw, bool enable);
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void (*volume_in)(HWVoiceIn *hw, Volume *vol);
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};
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void *audio_generic_get_buffer_in(HWVoiceIn *hw, size_t *size);
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void audio_generic_put_buffer_in(HWVoiceIn *hw, void *buf, size_t size);
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void audio_generic_run_buffer_out(HWVoiceOut *hw);
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void *audio_generic_get_buffer_out(HWVoiceOut *hw, size_t *size);
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size_t audio_generic_put_buffer_out(HWVoiceOut *hw, void *buf, size_t size);
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size_t audio_generic_write(HWVoiceOut *hw, void *buf, size_t size);
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size_t audio_generic_read(HWVoiceIn *hw, void *buf, size_t size);
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struct capture_callback {
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struct audio_capture_ops ops;
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void *opaque;
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QLIST_ENTRY (capture_callback) entries;
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};
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struct CaptureVoiceOut {
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HWVoiceOut hw;
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void *buf;
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QLIST_HEAD (cb_listhead, capture_callback) cb_head;
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QLIST_ENTRY (CaptureVoiceOut) entries;
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};
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struct SWVoiceCap {
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SWVoiceOut sw;
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CaptureVoiceOut *cap;
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QLIST_ENTRY (SWVoiceCap) entries;
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};
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typedef struct AudioState {
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struct audio_driver *drv;
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Audiodev *dev;
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void *drv_opaque;
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QEMUTimer *ts;
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QLIST_HEAD (card_listhead, QEMUSoundCard) card_head;
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QLIST_HEAD (hw_in_listhead, HWVoiceIn) hw_head_in;
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QLIST_HEAD (hw_out_listhead, HWVoiceOut) hw_head_out;
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QLIST_HEAD (cap_listhead, CaptureVoiceOut) cap_head;
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int nb_hw_voices_out;
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int nb_hw_voices_in;
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int vm_running;
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int64_t period_ticks;
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bool timer_running;
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uint64_t timer_last;
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QTAILQ_ENTRY(AudioState) list;
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} AudioState;
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extern const struct mixeng_volume nominal_volume;
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extern const char *audio_prio_list[];
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void audio_driver_register(audio_driver *drv);
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audio_driver *audio_driver_lookup(const char *name);
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void audio_pcm_init_info (struct audio_pcm_info *info, struct audsettings *as);
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void audio_pcm_info_clear_buf (struct audio_pcm_info *info, void *buf, int len);
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int audio_bug (const char *funcname, int cond);
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void *audio_calloc (const char *funcname, int nmemb, size_t size);
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void audio_run(AudioState *s, const char *msg);
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typedef struct RateCtl {
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int64_t start_ticks;
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int64_t bytes_sent;
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} RateCtl;
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void audio_rate_start(RateCtl *rate);
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size_t audio_rate_get_bytes(struct audio_pcm_info *info, RateCtl *rate,
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size_t bytes_avail);
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static inline size_t audio_ring_dist(size_t dst, size_t src, size_t len)
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{
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return (dst >= src) ? (dst - src) : (len - src + dst);
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}
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#define dolog(fmt, ...) AUD_log(AUDIO_CAP, fmt, ## __VA_ARGS__)
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#ifdef DEBUG
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#define ldebug(fmt, ...) AUD_log(AUDIO_CAP, fmt, ## __VA_ARGS__)
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#else
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#define ldebug(fmt, ...) (void)0
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#endif
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#define AUDIO_STRINGIFY_(n) #n
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#define AUDIO_STRINGIFY(n) AUDIO_STRINGIFY_(n)
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typedef struct AudiodevListEntry {
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Audiodev *dev;
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QSIMPLEQ_ENTRY(AudiodevListEntry) next;
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} AudiodevListEntry;
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typedef QSIMPLEQ_HEAD(, AudiodevListEntry) AudiodevListHead;
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AudiodevListHead audio_handle_legacy_opts(void);
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void audio_free_audiodev_list(AudiodevListHead *head);
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void audio_create_pdos(Audiodev *dev);
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AudiodevPerDirectionOptions *audio_get_pdo_in(Audiodev *dev);
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AudiodevPerDirectionOptions *audio_get_pdo_out(Audiodev *dev);
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#endif /* QEMU_AUDIO_INT_H */
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